1. Department of Electrical Engineering, Eindhoven University of Technology, the Netherlands
2. Department of Gastroenterology, Catharina Hospital, Eindhoven, the Netherlands
3. Department of Gastroenterology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
4. Gastroenterology and Interventional Endoscopy, St. John of God Hospital, Regensburg, Germany
5. Department of Gastroenterology, St. Antonius Hospital, Nieuwegein, the Netherlands
6. Department of Gastroenterology, Amsterdam Medical Center, Amsterdam, the Netherlands